high parses plus buffer holder

From: Sairlao, Chark <SairlaoC_at_transfield.com.au>
Date: Tue, 12 Jun 2001 23:44:18 -0700
Message-ID: <F001.003270D0.20010612233151@fatcity.com>

hi all,

I got this application , they are not using any packages ,triggers or procedure. And there are lots of statements number of parsing = number of execute. Is there any way you can pinned the sql statsments into sga, beside increasing the sga size.

buffer holder.

I ran this statements

select decode(state,0, 'FREE',
1,decode(lrba_seq,0,'AVAILABLE','BEING USED'), 3, 'BEING USED', state) "BLOCK STATUS",
count(*)
from x$bh
group by decode(state,0,'FREE',1,decode(lrba_seq,0,'AVAILABLE', 'BEING USED'),3, 'BEING USED', state)

and got the following result.

BLOCK STATUS                                    COUNT(*)
----------------------------------------                ----------
AVAILABLE                                        5889
BEING USED                                       299
FREE                                             13012

Just for the purpose of testing it, I alter a table which has about 500 blocks to be cached and select * from that table. execute the above statements againg I got the same result. Where I expected to have 500 blocks lesser in free block. What have done wrong here?

Thanks And Regards
Chark Sairlao

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Author: Sairlao, Chark
INET: SairlaoC_at_transfield.com.au

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